William Gargan
James Montgomery 'Jim' Wilson
                                    Irene Hervey
Frankie Gilroy Wilson
                                    Charles Lang
Tex Harper
                                    Maria Montez
Sonya Dietrich Landers
                                    Lloyd Corrigan
George Lewis
                                    Mary Gordon
Abigail 'Mag' MacPherson
                                    Truman Bradley
Dr. Gregory Landers
                                    Phillip Trent
Tom Hare
                                    Turhan Bey
Captain Chundra
                                    John Bagni
Paul, the Purser
                                    George Lynn
Bland (as Peter Lynn)
                                    Billy Wayne
Lamb
                                    Wade Boteler
Christopher Ruggles
                                    Warren Ashe
R. C. Bradford
                                    J. Pat O'Malley
Chief inspector
                                    C. Montague Shaw
Captain Caldwell
Philip Ahlm
Submarine Gun Crewman (uncredited)
                                    Edgar Barrier
Man on Intercom (voice) (uncredited)
Harold Daniels
Sam
                                    Paul Dubov
News photographer
                                    Roland Got
Bellhop (uncredited)
                                    Eddie Hall
Submarine Crewman firing on the Bombay Clipper (uncredited)
                                    Riley Hill
Steward (uncredited)
Keith Hitchcock
Hotel clerk
Jack G. Lee
News photographer
Connie Leon
Chambermaid
                                    Lal Chand Mehra
Guard (uncredited)
                                    John Picorri
Waiter
                                    Beatrice Roberts
Miss Kane - Secretary (uncredited)
Mel Ruick
Submarine commander
Tom Schamp
Submarine Gun Crewman (uncredited)
Suran Singh
Singapore Policeman (uncredited)
                                    Harry Strang
Submarine officer
Bombay Clipper
Released